What type of circuit is used to protect against overcurrent in marine systems?

In marine systems, overcurrent protection is critical for preventing damage to electrical components and potential fire hazards. The correct choice, which involves the use of a circuit breaker or fuse, is designed specifically to interrupt the flow of electricity when it exceeds safe levels. This automatic interruption prevents overheating and possible failure of wiring and various devices.

Circuit breakers can be reset after tripping, which allows for continued use of the electrical system once the issue has been resolved. Fuses, on the other hand, are single-use devices that need to be replaced after they have blown to restore function. Both devices serve the essential purpose of ensuring electrical safety, making them standard protective measures in marine electrical applications.

Other options mentioned, such as a relay, resistor, and voltage stabilizer, do not serve the primary function of overcurrent protection. A relay is typically used for switching circuits on and off but does not inherently provide overcurrent protection. Resistors limit current flow but do not disconnect the circuit under overcurrent conditions. Voltage stabilizers regulate voltage levels but do not protect against excessive current, making the circuit breaker or fuse the best choices for overcurrent protection in marine systems.